Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsPropagation of Gaussian and Non-Gaussian Laser Beams through Thin Lenseshttp://demonstrations.wolfram.com/PropagationOfGaussianAndNonGaussianLaserBeamsThroughThinLens/]]>http://demonstrations.wolfram.com/PropagationOfGaussianAndNonGaussianLaserBeamsThroughThinLens/